<%--
  Created by IntelliJ IDEA.
  User: user
  Date: 2025/4/9
  Time: 14:16
  To change this template use File | Settings | File Templates.
--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
    <title>隐藏表单域</title>
</head>
<body>
    <form action="hiddenShow" method="post">
        <input type="hidden" name="userId" value="100001">
        <button>向客户端发起请求</button>
    </form>
</body>
</html>
